DEA-C01 Data Store Management Practice Question
A data engineer is designing a multi-region disaster recovery plan for an Amazon DynamoDB table. The table stores critical user profile data and must have a Recovery Point Objective (RPO) of less than 1 minute and a Recovery Time Objective (RTO) of less than 5 minutes. Which solution meets these requirements?
⚠ Common exam trap
Test-takers frequently confuse point-in-time recovery (PITR) or on-demand backups with multi-region replication, not realizing that restore operations are manual and time-consuming, whereas global tables provide automatic, near-real-time replication.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Use DynamoDB global tables to replicate data to another region.
DynamoDB global tables provide active-active multi-region replication with sub-second latency, ensuring that data written in one region is automatically replicated to other regions within seconds. This meets the RPO of less than 1 minute and RTO of less than 5 minutes because the table is already available in the secondary region for immediate reads and writes, with no manual restore or failover steps required.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Configure DynamoDB Streams and a Lambda function to replicate data to another region.
Why it's wrong here
Custom replication may introduce latency and complexity, not meeting RPO/RTO as reliably.
- ✗
Use DynamoDB on-demand backup and restore to another region.
Why it's wrong here
Restoring from backup can take longer than 5 minutes.
- ✓
Use DynamoDB global tables to replicate data to another region.
Why this is correct
Global tables provide near-real-time replication and fast failover.
- ✗
Enable point-in-time recovery (PITR) and restore to another region.
Why it's wrong here
Restoring to a new table takes time, exceeding RTO.
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Variation 1. A data engineer is designing a multi-Region disaster recovery solution for an Amazon DynamoDB table. The table must be available in a secondary Region with minimal data loss and automatic failover. Which feature should be used?
hard- A.DynamoDB on-demand backup and restore in the secondary Region
- ✓ B.DynamoDB global tables
- C.DynamoDB point-in-time recovery (PITR)
- D.DynamoDB cross-Region snapshot export to S3
Why B: DynamoDB global tables provide a fully managed, multi-Region, multi-active database solution that replicates data automatically across selected AWS Regions. This ensures automatic failover with eventual consistency and minimal data loss, meeting the disaster recovery requirements for high availability and automatic failover without manual intervention.
JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This DEA-C01 practice question is part of Courseiva's free Amazon Web Services certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the DEA-C01 exam.